ICD-10 Code K90.0 – Celiac disease (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K90.0 – Celiac disease
What it is
K90.0 identifies celiac disease, an immune-mediated disorder triggered by gluten exposure. It causes small-intestinal injury and impaired nutrient absorption.
Clinical signs
Clinical features vary; refer to documentation. Commonly documented findings include chronic diarrhea, abdominal pain, bloating, weight loss, and signs of malabsorption or nutrient deficiency.
When to use this code
Use K90.0 when the provider documents celiac disease, gluten-sensitive enteropathy, or biopsy-supported sprue. It also fits follow-up visits for established celiac disease when the condition remains relevant to care. Code from the record, not from diet history alone.
Do not use for
Do not use K90.0 for nonspecific gluten intolerance or for symptoms without a documented diagnosis. Check documentation if the record only mentions abdominal complaints or dietary restriction.
Coding tip
Verify that the note clearly links the diagnosis to celiac disease rather than general food sensitivity before assigning K90.0.